package c001;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.catalina.tribes.util.Arrays;

/**
 *
 * @author brian
 */
@WebServlet(name = "c001_a006", urlPatterns = {"/c001/a006"})
public class a006 extends HttpServlet {

    private final String[] dataPools = new String[]{
        "abc", "a001",
        "bcd", "b002",
        "cde", "c001"
    };

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            ArrayList<String> ansAL = new ArrayList<>();
            String qStr = request.getParameter("q");
            if (qStr != null) {
                for (String data : dataPools) {
                    if (data.startsWith(qStr)) {
                        ansAL.add(data);
                    }
                }
            }
            if (!ansAL.isEmpty()) {
                out.println(Arrays.toString(ansAL.toArray(new String[ansAL.size()])));
            } else {
                out.println("no hint!");
            }
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
